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Secure Communication via a Recycling of Attenuated Classical Signals
Phys. Rev. Applied 7, 014010 – Published 12 January, 2017
DOI: https://doi.org/10.1103/PhysRevApplied.7.014010
Abstract
We describe a simple method of interleaving a classical and quantum signal in a secure communication system at a single wavelength. The system transmits data encrypted via a one-time pad on a classical signal and produces a single-photon reflection of the encrypted signal. This attenuated signal can be used to observe eavesdroppers and produce fresh secret bits. The system can be secured against eavesdroppers, detect simple tampering or classical bit errors, produces more secret bits than it consumes, and does not require any entanglement or complex wavelength division multiplexing, thus, making continuous secure two-way communication via one-time pads practical.
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References (15)
- P. Shor, Polynomial-time algorithms for prime factorization and discrete logarithms on a quantum computer, SIAM J. Comput. 26, 1484 (1997).
- J. Daemen, L. R. Knudsen, and V. Rijmen, in Fast Software Encryption, Lecture Notes in Computer Science Vol. 1267, edited by E. Biham (Springer-Verlag, Berlin, 1997), pp. 149–165.
- C. H. Bennett, E. Bernstein, G. Brassard, and U. Vazirani, Strengths and weaknesses of quantum computing, SIAM J. Comput. 26, 1510 (1997).
- P. Eraerds, N. Walenta, M. Legre, N. Gisin, and H. Zbinden, Quantum key distribution and 1 Gbps data encryption over a single fiber, New J. Phys. 12, 063027 (2010).
- C. E. Shannon, Communication theory of secrecy systems, Bell Syst. Tech. J. 28, 656 (1949).
- G. L. Long, F. G. Deng, C. Wang, and X. Li, Quantum secure direct communication and deterministic secure quantum communication, Front. Phys. China 2, 251 (2007).
- C. H. Bennett and G. Brassard, Quantum cryptography: Public key distribution and coin tossing, in Proceedings of IEEE Conference on Computer Systems and Signal Processing, 1984, pp. 175–179.
- C. Branciard, N. Gisin, B. Kraus, and V. Scarani, Security of two quantum cryptography protocols using the same four qubit states, Phys. Rev. A 72, 032301 (2005).
- F. G. Deng and G. L. Long, Secure direct communication with quantum one-time pad, Phys. Rev. A 69, 052319 (2004).
- F. G. Deng and G. L. Long, Bidirectional quantum key distribution protocol with practical faint laser pulses, Phys. Rev. A 70, 012311 (2004).
- H. Lu, C.-H. F. Fung, X. Ma, and Q. Cai, Unconditional security proof of a deterministic quantum key distribution with a two-way channel, Phys. Rev. A 84, 042344 (2011).
- Y. Zhao, B. Qi, and H.-K. Lo, Quantum key distribution with an unknown and untrusted source, Phys. Rev. A 77, 052327 (2008).
- D. Gottsman, H.-K. Lo, N. Lutkenhaus, and J. Preskill, Security of quantum key distribution with imperfect devices, Quantum Inf. Comput. 5, 325 (2004).
- L. C. Comandar, B. Frhlich, J. F. Dynes, A. W. Sharpe, M. Lucamarini, Z. L. Yuan, R. V. Penty, and A. J. Shields, GHz-gated single-photon detector with detection efficiency exceeding 55% at 1550 nm, J. Appl. Phys. 117, 083109 (2015).
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